/**
 */
package ftldsl;

import org.eclipse.emf.ecore.EObject;

/**
 * <!-- begin-user-doc -->
 * A representation of the model object '<em><b>Expression</b></em>'.
 * <!-- end-user-doc -->
 *
 * <p>
 * The following features are supported:
 * <ul>
 *   <li>{@link ftldsl.Expression#getValue <em>Value</em>}</li>
 *   <li>{@link ftldsl.Expression#getNext <em>Next</em>}</li>
 *   <li>{@link ftldsl.Expression#getLoperator <em>Loperator</em>}</li>
 *   <li>{@link ftldsl.Expression#getCoperator <em>Coperator</em>}</li>
 *   <li>{@link ftldsl.Expression#getInvocation <em>Invocation</em>}</li>
 * </ul>
 * </p>
 *
 * @see ftldsl.FtldslPackage#getExpression()
 * @model
 * @generated
 */
public interface Expression extends EObject {

	/**
	 * Returns the value of the '<em><b>Value</b></em>' attribute.
	 * <!-- begin-user-doc -->
	 * <p>
	 * If the meaning of the '<em>Value</em>' attribute isn't clear,
	 * there really should be more of a description here...
	 * </p>
	 * <!-- end-user-doc -->
	 * @return the value of the '<em>Value</em>' attribute.
	 * @see #setValue(Object)
	 * @see ftldsl.FtldslPackage#getExpression_Value()
	 * @model
	 * @generated
	 */
	Object getValue();

	/**
	 * Sets the value of the '{@link ftldsl.Expression#getValue <em>Value</em>}' attribute.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @param value the new value of the '<em>Value</em>' attribute.
	 * @see #getValue()
	 * @generated
	 */
	void setValue(Object value);

	/**
	 * Returns the value of the '<em><b>Next</b></em>' containment reference.
	 * <!-- begin-user-doc -->
	 * <p>
	 * If the meaning of the '<em>Next</em>' containment reference isn't clear,
	 * there really should be more of a description here...
	 * </p>
	 * <!-- end-user-doc -->
	 * @return the value of the '<em>Next</em>' containment reference.
	 * @see #setNext(Expression)
	 * @see ftldsl.FtldslPackage#getExpression_Next()
	 * @model containment="true"
	 * @generated
	 */
	Expression getNext();

	/**
	 * Sets the value of the '{@link ftldsl.Expression#getNext <em>Next</em>}' containment reference.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @param value the new value of the '<em>Next</em>' containment reference.
	 * @see #getNext()
	 * @generated
	 */
	void setNext(Expression value);

	/**
	 * Returns the value of the '<em><b>Loperator</b></em>' attribute.
	 * The default value is <code>"^"</code>.
	 * The literals are from the enumeration {@link ftldsl.LogicalOperator}.
	 * <!-- begin-user-doc -->
	 * <p>
	 * If the meaning of the '<em>Loperator</em>' attribute isn't clear,
	 * there really should be more of a description here...
	 * </p>
	 * <!-- end-user-doc -->
	 * @return the value of the '<em>Loperator</em>' attribute.
	 * @see ftldsl.LogicalOperator
	 * @see #setLoperator(LogicalOperator)
	 * @see ftldsl.FtldslPackage#getExpression_Loperator()
	 * @model default="^"
	 * @generated
	 */
	LogicalOperator getLoperator();

	/**
	 * Sets the value of the '{@link ftldsl.Expression#getLoperator <em>Loperator</em>}' attribute.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @param value the new value of the '<em>Loperator</em>' attribute.
	 * @see ftldsl.LogicalOperator
	 * @see #getLoperator()
	 * @generated
	 */
	void setLoperator(LogicalOperator value);

	/**
	 * Returns the value of the '<em><b>Coperator</b></em>' attribute.
	 * The default value is <code>"!"</code>.
	 * The literals are from the enumeration {@link ftldsl.ComparisonOperator}.
	 * <!-- begin-user-doc -->
	 * <p>
	 * If the meaning of the '<em>Coperator</em>' attribute isn't clear,
	 * there really should be more of a description here...
	 * </p>
	 * <!-- end-user-doc -->
	 * @return the value of the '<em>Coperator</em>' attribute.
	 * @see ftldsl.ComparisonOperator
	 * @see #setCoperator(ComparisonOperator)
	 * @see ftldsl.FtldslPackage#getExpression_Coperator()
	 * @model default="!"
	 * @generated
	 */
	ComparisonOperator getCoperator();

	/**
	 * Sets the value of the '{@link ftldsl.Expression#getCoperator <em>Coperator</em>}' attribute.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @param value the new value of the '<em>Coperator</em>' attribute.
	 * @see ftldsl.ComparisonOperator
	 * @see #getCoperator()
	 * @generated
	 */
	void setCoperator(ComparisonOperator value);

	/**
	 * Returns the value of the '<em><b>Invocation</b></em>' containment reference.
	 * <!-- begin-user-doc -->
	 * <p>
	 * If the meaning of the '<em>Invocation</em>' reference isn't clear,
	 * there really should be more of a description here...
	 * </p>
	 * <!-- end-user-doc -->
	 * @return the value of the '<em>Invocation</em>' containment reference.
	 * @see #setInvocation(FunctionCall)
	 * @see ftldsl.FtldslPackage#getExpression_Invocation()
	 * @model containment="true"
	 * @generated
	 */
	FunctionCall getInvocation();

	/**
	 * Sets the value of the '{@link ftldsl.Expression#getInvocation <em>Invocation</em>}' containment reference.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @param value the new value of the '<em>Invocation</em>' containment reference.
	 * @see #getInvocation()
	 * @generated
	 */
	void setInvocation(FunctionCall value);
} // Expression
